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Large‐scale antenna arrays (LSAAs) are used to achieve satisfactory performance in 5G communications and radar systems. However, sidelobe suppression and nulls control of LSAAs are high‐dimensional nonlinear optimization problems owing to the large number of antenna elements. In this study, we formulate an optimization problem for joint sidelobe suppression and nulls control of large‐scale linear...
In this paper, an efficient biogeography-based optimization (EBBO) method is proposed to synthesize the circular antenna arrays (CAA) for specific radiation beam pattern properties and null controls. The proposed method achieves the desired beam patterns by jointly optimizing the excitation currents as well as the spaces between the array elements. Three improved components, including chaotic search...
Collaborative beamforming has been introduced in the communication process of wireless sensor networks to increase the transmission range of sensor nodes. The challenge in using collaborative beamforming is the high sidelobe level. In this paper, an improved hybrid heuristic swarm intelligence optimization algorithm called bat-chicken swarm optimization is proposed to optimize the peak sidelobe level...
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